Recent questions tagged Machine-learning

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Q: Scikit-learn's LabelBinarizer vs. OneHotEncoder

What is the difference between the two? It seems that both create new columns, in which their number is equal to ... they are in. Select the correct answer from above options...

asked Feb 1, 2022 in Education by JackTerrance

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Q: Time difference within group by objects in Python Pandas

I have a dataframe that looks like this: from to datetime other ---------------------------------- ... !! Thank you so much in advance! Select the correct answer from above options...

asked Feb 1, 2022 in Education by JackTerrance

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Q: pandas reset_index after groupby.value_counts()

I am trying to groupby a column and compute value counts on another column. import pandas as pd dftest = pd. ... Amt, already exists Select the correct answer from above options...

asked Feb 1, 2022 in Education by JackTerrance

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Q: ValueError: Wrong number of items passed - Meaning and suggestions?

I am receiving the error: ValueError: Wrong number of items passed 3, placement implies 1, and I am struggling to ... 'sigma'] = sigma Select the correct answer from above options...

asked Feb 1, 2022 in Education by JackTerrance

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Q: How to install JQ on Mac by command-line?

I need to know the most efficient way of installing JQ on Mac (el capitan). The code is downloaded to my mac ... via the command line. Select the correct answer from above options...

asked Feb 1, 2022 in Education by JackTerrance

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Q: How big should batch size and number of epochs be when fitting a model in Keras?

I am training on 970 samples and validating on 243 samples. How big should batch size and number of epochs be ... on data input size? Select the correct answer from above options...

asked Feb 1, 2022 in Education by JackTerrance

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Q: What does the standard Keras model output mean? What is epoch and loss in Keras?

I have just built my first model using Keras and this is the output. It looks like the standard output you get ... - loss: 0.1928 Select the correct answer from above options...

asked Feb 1, 2022 in Education by JackTerrance

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Q: How to tell which Keras model is better?

I don't understand which accuracy in the output to use to compare my 2 Keras models to see which one is better. ... - val_acc: 0.7531 Select the correct answer from above options...

asked Feb 1, 2022 in Education by JackTerrance

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Q: fit_transform() takes 2 positional arguments but 3 were given with LabelBinarizer

I am totally new to Machine Learning and I have been working with unsupervised learning technique. Image shows my ... 3 were given Select the correct answer from above options...

asked Feb 1, 2022 in Education by JackTerrance

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Q: How to load a model from an HDF5 file in Keras?

How to load a model from an HDF5 file in Keras? What I tried: model = Sequential() model.add(Dense(64, ... list index out of range Select the correct answer from above options...

asked Feb 1, 2022 in Education by JackTerrance